Female, 40, no major medical hx., no daily meds. For the past several years I have experienced occasional Severe headaches. Typically I have no warning, I will be awakened w/ severe, piercing pain centered in my left eye, I describe this as feeling like an ice pick penetrating my eye and exiting at the left base of my skull, my left eye will water and my nose will run/feel stuffy on the left side. The pain is excruciating causing me to "pant". When these start they will come/go for approx. 3 days then go away for about a month, then come on again. I take "Excedrin" ibprofen to tx. but doesn't seem to help much...would like some advice, what is this and what can I do to treat?